Or if you want one that follows the Arduino form factor more closely (including headers in the same place for shield compatibility) there's also this one, which has a small prototyping area inside the standard Arduino shape:

Several types of connector boards are available to connect all arduino IOs to breadboard or perforation boards for larger area. The protoshield handles very small projects ok but could be too small for you.

Here is a link to several of them:

http://www.inmojo.com/buy/prototyping/

Notice the phi-connect is my design. Also the Aussie shield and quick shield are good choices.